Control method and control system for refrigerating machine
A control method and refrigerator technology, applied in refrigerators, refrigeration and liquefaction, refrigeration components, etc., can solve the problems of high price, complex temperature measurement chip circuit, lack of refrigerator working status and duration, etc., to solve high-frequency radiation Interference, save temperature control cost, improve EMC performance effect
Pending Publication Date: 2022-04-26
IRAY TECH CO LTD
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Problems solved by technology
However, for the method of using a thermistor, in an ultra-low temperature environment below -100°C, a thermistor of a special material is required, which is expensive
For the method of using a temperature measuring chip, due to the relatively complex internal circuit of the temperature measuring chip, the temperature range can basically reach -55°C, which cannot meet the monitoring of ultra-low temperature environments.
At the same time, the existing solutions are basically only set up for the control aspect, lacking the monitoring of the working status and duration of the refrigerator
Method used
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Embodiment Construction
[0027] Embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0028] figure 1 A schematic diagram of a scenario including a control system 12 for a refrigerator is shown. like figure 1 As shown, a refrigerator 11 is used to control the temperature in a temperature-controlled environment 10, such as a Dewar device. A temperature detection element 101 is placed in the temperature-controlled environment 10, and the temperature detection element 101 includes a thermistor and a transistor. The transistor is, for example, a diode, a triode or other transistors, as long as the junction voltage drop of the transistor changes with temperature.
[0029] The control system 12 includes a constant current source 121, an analog-to-digital conversion device (Analog to Digital Converter, ADC) 122, a control device 123, a digital-to-analog conversion device (Digital to Analog Converter, DAC) 124, a storage device 125...
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The invention discloses a control method, a control device and a control system for a refrigerator, a computer readable storage medium, electronic equipment and a computer program product. The control method comprises the following steps: receiving a measurement voltage measured by a temperature detection element, wherein the temperature detection element is located in a temperature-controlled environment; determining the actual temperature of the temperature-controlled environment based on the measured voltage; calculating an adjustment voltage based on the actual temperature and a set temperature preset for the temperature-controlled environment; and applying the adjusting voltage to the voltage-adjustable power supply to change the output voltage output by the voltage-adjustable power supply to a motor in the refrigerator, thereby adjusting at least one parameter of the motor. According to the invention, the EMC performance is improved, the temperature control cost is reduced, and high-precision temperature control is realized.
Description
technical field [0001] The present application relates to a control method for a refrigerator, a control device, a control system, a computer-readable storage medium, electronic equipment, and a computer program product. Background technique [0002] At present, the control of rotary refrigerators (such as Stirling refrigeration) mostly adopts the control mode of fixed voltage PWM (Pulsewidth modulation, pulse width modulation) to adjust the duty ratio or the current control method, and the temperature detection and the above refrigerator control form a closed loop. The system feeds back the current temperature in the Dewar device through temperature detection. [0003] The control method of adjusting the duty cycle of the fixed voltage PWM and the current control method to realize the control of the refrigerator will eventually appear in the state of the same winding coil being repeatedly turned on and off during the rotation of the motor in the refrigerator, and the coil i...
Claims
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Login to View More IPC IPC(8): F25B49/02
CPCF25B49/02F25B2309/1428
Inventor 孔令飞王德琳张建敏
Owner IRAY TECH CO LTD